ExecutorService cexecutor = executor;
if (cexecutor == null || cexecutor.isShutdown()) {
cexecutor = SHARED_EXECUTOR;
}
try{
cexecutor.execute(new ChannelEventRunnable(channel, handler ,ChannelState.CAUGHT, exception));
}catch (Throwable t) {
throw new ExecutionException("caught event", channel, getClass()+" error when process caught event ." , t);
}
}